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00a917ca7c
We currently version `__asan_init` and when the ABI version doesn't match, the linker gives a `undefined reference to '__asan_init_v5'` message. From this, it might not be obvious that it's actually a version mismatch error. This patch makes the error message much clearer by changing the name of the undefined symbol to be `__asan_version_mismatch_check_xxx` (followed by the version string). We obviously don't want the initializer to be named like that, so it's a separate symbol that is used only for the purpose of version checking. Reviewed at http://reviews.llvm.org/D11004 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@243003 91177308-0d34-0410-b5e6-96231b3b80d8
65 lines
2.5 KiB
C++
65 lines
2.5 KiB
C++
//===-- ModuleUtils.h - Functions to manipulate Modules ---------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This family of functions perform manipulations on Modules.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_TRANSFORMS_UTILS_MODULEUTILS_H
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#define LLVM_TRANSFORMS_UTILS_MODULEUTILS_H
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#include "llvm/ADT/ArrayRef.h"
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#include "llvm/ADT/StringRef.h"
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#include <utility> // for std::pair
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namespace llvm {
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class Module;
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class Function;
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class GlobalValue;
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class GlobalVariable;
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class Constant;
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class StringRef;
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class Value;
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class Type;
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template <class PtrType> class SmallPtrSetImpl;
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/// Append F to the list of global ctors of module M with the given Priority.
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/// This wraps the function in the appropriate structure and stores it along
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/// side other global constructors. For details see
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/// http://llvm.org/docs/LangRef.html#intg_global_ctors
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void appendToGlobalCtors(Module &M, Function *F, int Priority);
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/// Same as appendToGlobalCtors(), but for global dtors.
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void appendToGlobalDtors(Module &M, Function *F, int Priority);
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/// \brief Given "llvm.used" or "llvm.compiler.used" as a global name, collect
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/// the initializer elements of that global in Set and return the global itself.
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GlobalVariable *collectUsedGlobalVariables(Module &M,
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SmallPtrSetImpl<GlobalValue *> &Set,
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bool CompilerUsed);
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// Validate the result of Module::getOrInsertFunction called for an interface
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// function of given sanitizer. If the instrumented module defines a function
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// with the same name, their prototypes must match, otherwise
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// getOrInsertFunction returns a bitcast.
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Function *checkSanitizerInterfaceFunction(Constant *FuncOrBitcast);
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/// \brief Creates sanitizer constructor function, and calls sanitizer's init
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/// function from it.
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/// \return Returns pair of pointers to constructor, and init functions
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/// respectively.
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std::pair<Function *, Function *> createSanitizerCtorAndInitFunctions(
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Module &M, StringRef CtorName, StringRef InitName,
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ArrayRef<Type *> InitArgTypes, ArrayRef<Value *> InitArgs,
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StringRef VersionCheckName = StringRef());
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} // End llvm namespace
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#endif // LLVM_TRANSFORMS_UTILS_MODULEUTILS_H
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